public async Task GetLeastFavouriteColor_WithGrainState_ReturnsColor() { // Arrange var state = new ColorGrainState { Color = Color.Red, Id = GrainId, }; Silo.AddGrainState <ColorRankingGrain, ColorGrainState>(state: state); var grain = await Silo.CreateGrainAsync <ColorRankingGrain>(GrainId); // Act var color = await grain.GetLeastFavouriteColor(); color.Should().Be(Color.Red); }